Re: improve docs on min()/max() performance

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Neil Conway <neilc(at)samurai(dot)com>
Cc: PostgreSQL Patches <pgsql-patches(at)postgresql(dot)org>
Subject: Re: improve docs on min()/max() performance
Date: 2003-02-17 20:42:08
Message-ID: 200302172042.h1HKg8c25943@candle.pha.pa.us
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Your patch has been added to the PostgreSQL unapplied patches list at:

http://momjian.postgresql.org/cgi-bin/pgpatches

I will try to apply it within the next 48 hours.

---------------------------------------------------------------------------

Neil Conway wrote:
> This patch adds a note to the documentation describing why the
> performance of min() and max() is slow when applied to the entire table,
> and suggesting the simple workaround most experienced Pg users
> eventually learn about (SELECT xyz ... ORDER BY xyz LIMIT 1).
>
> Any suggestions on improving the wording of this section would be
> welcome.
>
> Cheers,
>
> Neil
> --
> Neil Conway <neilc(at)samurai(dot)com> || PGP Key ID: DB3C29FC
>
>

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